STOP Early Journal Content on JSTOR, Free to Anyone in the World This article is one of nearly 500,000 scholarly works digitized and made freely available to everyone in the world by JSTOR. Known as the Early Journal Content, this set of works include research articles, news, letters, and other writings published in more than 200 of the oldest leading academic journals. The works date from the mid-seventeenth to the early twentieth centuries. We encourage people to read and share the Early Journal Content openly and to tell others that this resource exists. People may post this content online or redistribute in any way for non-commercial purposes. Read more about Early Journal Content at http://about.jstor.org/participate-jstor/individuals/early- journal-content . JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not-for-profit organization that also includes Ithaka S+R and Portico. For more information about JSTOR, please contact firstname.lastname@example.org. A METHOD OF REMOVING CUTICULA FROM MARINE ANNELIDS. The following simple method has been found successful for the removal of cuticula from marine annelids : The worms are first narcotized in sea water to which from 5 to iojfo commercial alcohol has been added. They are then placed in a io^> solution of sodium chloride in distilled water for from 24 to 48 hours. The time of immersion in the salt solution varies with the different species. The worm is now removed to fresh water and an incision with the points of scissors is made along the dorsal surface of the animal. A little shaking with forceps aided with scalpel is sufficient to remove the cuticula entire, although it is usually more conven- ient to first cut the worm into pieces. The pieces of cuticula thus obtained are floated upon slides and the water is allowed to evaporate. In this way permanent mounts are obtained. Such mounts are especially valuable for studying the distribu- tion of sense organs, gland pores, setae, etc. If the worm has been left in the salt solution a sufficient time all the epidermis cells will be left behind and a mount of perfectly clean cuticula will be obtained. Care must be taken to wash thoroughly in fresh water before mounting upon slides; otherwise salt crystals will form and injure the preparations. Margaret Lewis.